// 类组件

import { Component } from 'react'
// 或改成
// import React from 'react'
// class App extends React.Component {}
class App extends Component {
  constructor() {
    super()
    this.state = {
      message: 'Hello'
    }
  }
  render () {
    // const { message } = this.state
    // return (
    //   <div>App Component { message }</div>
    // )
    // return ['aaa', 'bbb', <h1>hello</h1>]
    // return 'Hello'
    return true
  }
}

export default App
